Maintenance & Technical > KX250 / KX125

Smoking a lot?

<< < (2/4) > >>

jfabmotorsports.com:
Too much oil. Mix it the way the manual says. Closer to 32:1 maybe even 50:1.

"Mosquito fogger" sorry wrong generation!  :roll:

Jopiz:
Despite the compression you should be able to kick it enough to get a good spark. It really needs only one to two revolutions to generate a spark. Trust me, you will be surprised how much better the spark is when you try an another coil. Nearly any ignition coil will do the trick. Try it. Just swap coil from another bike and try somehow to get a spark.

I wouldn't recommed using any wires or something to test the spark. If the high voltage backfires it will damage the CDI and the coil too. In my bike the sparkplug cap somehow loosened ( no contact). The high voltage went back right through and destroyed the coil and the CDI. Just one kick was enough to destroy the capacitors and other components.

I would recommend riding 1:32 mixture. Unless you ride WOT all the time you really dont need that 25:1 mixture.

-Jopizz

kx250.1698:

--- Quote from: jfabmotorsports.com on June 18, 2009, 05:24:12 AM ---Too much oil. Mix it the way the manual says. Closer to 32:1 maybe even 50:1.

"Mosquito fogger" sorry wrong generation!  :roll:

--- End quote ---

Oke thanks what can 2 much oil do, can it be that the bike sufferd to get way and sounds like it wants to die because when i used a bit less power was back?

kx250.1698:

--- Quote from: Jopiz on June 18, 2009, 06:00:49 AM ---Despite the compression you should be able to kick it enough to get a good spark. It really needs only one to two revolutions to generate a spark. Trust me, you will be surprised how much better the spark is when you try an another coil. Nearly any ignition coil will do the trick. Try it. Just swap coil from another bike and try somehow to get a spark.

I wouldn't recommed using any wires or something to test the spark. If the high voltage backfires it will damage the CDI and the coil too. In my bike the sparkplug cap somehow loosened ( no contact). The high voltage went back right through and destroyed the coil and the CDI. Just one kick was enough to destroy the capacitors and other components.

I would recommend riding 1:32 mixture. Unless you ride WOT all the time you really dont need that 25:1 mixture.

-Jopizz

--- End quote ---


oke but should i use the coil ignition( the black boxi thing that coil comes from not the cdi) 2 or just the wire that you use for spark plug?Can i maby use my 89 kx 250 coil?

Jopiz:
You should be able to use the coil from your 250. You can swap the whole thing. That black thing with the sparkplug wire + the spark plug cap. Make sure you make the connections right.

Using more oil makes your jetting leaner. And using less oil makes it richer. I have read  that a two-stroke makes the best power with a 1:18 mixture. More oil gives better sealing (for the ring) to the cylinder wall. But 1:32 mixture will do fine. It sounds your bike needs to be jetted properly?  :wink:

-Jopizz

Navigation

[0] Message Index

[#] Next page

[*] Previous page